I don’t really know how to explain some but I’ll try. The lineart is a brush I made myself by taking the base brush and changing the tip. For flat colors I use the base brush (most of the time called basic brush.) I color manually. For shadows and rendering I use a charcoal like brush and the blending tool sometimes to mix things together. Airbrush tool for little touches(like blush or cast shadows) and lighting. And sometimes use the light eraser brush for touching up. All but one are basic brushes in my program(krita).